1# $Id: links.mk,v 1.7 2020/08/19 17:51:53 sjg Exp $ 2# 3# @(#) Copyright (c) 2005, Simon J. Gerraty 4# 5# This file is provided in the hope that it will 6# be of use. There is absolutely NO WARRANTY. 7# Permission to copy, redistribute or otherwise 8# use this file is hereby granted provided that 9# the above copyright notice and this notice are 10# left intact. 11# 12# Please send copies of changes and bug-fixes to: 13# sjg@crufty.net 14# 15 16# some platforms need something special 17LN?= ln 18ECHO?= echo 19 20LINKS?= 21SYMLINKS?= 22 23__SYMLINK_SCRIPT= \ 24 ${ECHO} "$$t -> $$l"; \ 25 case `'ls' -l $$t 2> /dev/null` in \ 26 *"> $$l") ;; \ 27 *) \ 28 mkdir -p `dirname $$t`; \ 29 rm -f $$t; \ 30 ${LN} -s $$l $$t;; \ 31 esac 32 33 34__LINK_SCRIPT= \ 35 ${ECHO} "$$t -> $$l"; \ 36 mkdir -p `dirname $$t`; \ 37 rm -f $$t; \ 38 ${LN} $$l $$t 39 40_SYMLINKS_SCRIPT= \ 41 while test $$\# -ge 2; do \ 42 l=$$1; shift; \ 43 t=${DESTDIR}$$1; shift; \ 44 ${__SYMLINK_SCRIPT}; \ 45 done; :; 46 47_LINKS_SCRIPT= \ 48 while test $$\# -ge 2; do \ 49 l=${DESTDIR}$$1; shift; \ 50 t=${DESTDIR}$$1; shift; \ 51 ${__LINK_SCRIPT}; \ 52 done; :; 53 54_SYMLINKS_USE: .USE 55 @set ${$@_SYMLINKS:U${SYMLINKS}}; ${_SYMLINKS_SCRIPT} 56 57_LINKS_USE: .USE 58 @set ${$@_LINKS:U${LINKS}}; ${_LINKS_SCRIPT} 59 60 61# sometimes we want to ensure DESTDIR is ignored 62_BUILD_SYMLINKS_SCRIPT= \ 63 while test $$\# -ge 2; do \ 64 l=$$1; shift; \ 65 t=$$1; shift; \ 66 ${__SYMLINK_SCRIPT}; \ 67 done; :; 68 69_BUILD_LINKS_SCRIPT= \ 70 while test $$\# -ge 2; do \ 71 l=$$1; shift; \ 72 t=$$1; shift; \ 73 ${__LINK_SCRIPT}; \ 74 done; :; 75 76_BUILD_SYMLINKS_USE: .USE 77 @set ${$@_SYMLINKS:U${SYMLINKS}}; ${_BUILD_SYMLINKS_SCRIPT} 78 79_BUILD_LINKS_USE: .USE 80 @set ${$@_LINKS:U${LINKS}}; ${_BUILD_LINKS_SCRIPT} 81